Free CS0-004 mock exams

CompTIA publishes only a maximum question count, so our papers run at that maximum against the full time limit. That makes the pace slightly harder than a real sitting with fewer items, which is the safer side to practise on. The time limit is generous per question, so use it: marks are more often lost by deciding too quickly on evidence that was only skimmed.

Most items put evidence in front of you — a log excerpt, a SIEM table, scanner output, a list of open ports — and ask what it means. The trap is pattern-matching on one familiar word (a process name, a port number, a country) instead of reading every line. Before you look at the options, say what the evidence shows: which entry is out of place, and why. Then choose the option that names it.

Qualifiers decide many questions. "Most likely", "best" and "next" mean several options are true but only one fits the scenario, and "next" questions follow the incident response order strictly: an analyst who has just confirmed an infection contains it before eradicating anything. If your misses cluster on "next" items, revise the process order rather than the tools.

Vulnerability questions reward judgement, not maximum severity. The highest score is not automatically the first fix — exploitation in the wild, asset value, exposure and whether a patch exists all move the order, and an unpatchable system calls for compensating controls rather than removal. When an option sounds drastic (shut it down, block everything), check whether the scenario actually allows it.

Version 4 adds AI in security operations and keeps a whole domain on reporting and communication. Both are easy to under-revise because they feel like common sense, and both produce close distractors: an AI output to verify before acting on it, a metric or audience to match to the right report. Use the per-domain breakdown to find which domain trails, and drill it before the next full paper.